| === Aaton is now known as Aaton_off | ||
| jtv | bigjools: could you sanity-check my updated tftp directory layout at the bottom of this document? https://docs.google.com/a/canonical.com/document/d/1lpaxXmABGz7ytfc7TrXHCwin7B08EJBEHVyG92KO2qw/edit# | 03:56 |
|---|---|---|
| bigjools | jtv: yup | 03:56 |
| jtv | Thanks. | 03:56 |
| bigjools | jtv: we have a call shortly, we can discuss? | 03:57 |
| jtv | Yes | 03:59 |
| bigjools | jtv: ok waiting for you on skype | 04:01 |
| jtv | Coming | 04:01 |
| === Aaton_off is now known as Aaton | ||
| bigjools | *cobblerrage* | 05:41 |
| bigjools | jtv: have you seen cobbler just suddenly decide to stop authenticating on the web ui? | 05:45 |
| bigjools | the log says: | 05:45 |
| bigjools | Wed Jun 13 05:39:20 2012 - INFO | REMOTE invalid token; user(???) | 05:45 |
| === matsubara_ is now known as matsubara | ||
| jtv | bigjools: you get that exact authentication failure if your token has expired — or for any other kind of problem with the token IIRC. | 06:48 |
| bigjools | jtv: yes I know, but I am logging in to the web ... | 06:48 |
| jtv | Ah | 06:48 |
| === Aaton is now known as Aaton_off | ||
| Daviey | rbasak: Hey, jtc mentioned that you said pxelinux.cfg/default cannot be customised for different architectures | 10:45 |
| Daviey | I'm missing your concern. | 10:45 |
| Daviey | jtv* | 10:45 |
| rbasak | You need to serve a different pxelinux.cfg/default for each architecture, eg. by having different pxelinux.cfg directories | 10:45 |
| rbasak | Otherwise you'll end up serving the wrong arch kernel | 10:46 |
| jtv | Hi rbasak | 10:46 |
| rbasak | Hello! | 10:46 |
| rbasak | Does that make sense? | 10:46 |
| Daviey | rbasak: I thought we were looking to make them arch named? | 10:46 |
| rbasak | You could for example have pxelinux.cfg/amd64/default and pxelinux.cfg/armhf/highbank/default | 10:46 |
| rbasak | Set DHCP "filename" to pxelinux.cfg/amd64/pxelinux.0 | 10:47 |
| rbasak | Or pxelinux.cfg/armhf/highbank/pxelinux.0 if the highbank vendor string is detected | 10:47 |
| rbasak | But the default files need to be distinct, and pointed to by the dirname part of the DHCP filename entry | 10:47 |
| Daviey | rbasak: hwhat is wrong with dhcp 209? | 10:48 |
| jtv | Isn't pxelinux.cfg assumed to be in the same directory as the DHCP filename? | 10:48 |
| rbasak | Yes, exactly | 10:48 |
| rbasak | Daviey: dhcp 209: https://bugs.launchpad.net/ubuntu/+source/u-boot-linaro/+bug/927781/comments/2 | 10:48 |
| ubot5` | Ubuntu bug 927781 in u-boot-linaro (Ubuntu) "PXELINUX implementation doesn't respect dhcp ConfigFile or PathPrefix values" [Undecided,In progress] | 10:48 |
| rbasak | Daviey: ie. no dhcp 209 | 10:49 |
| Daviey | rbasak: 209 = pxelinux.cfg/default-armhf-highbank ? | 10:49 |
| Daviey | rbasak: i thought we were getting that bug fixed | 10:49 |
| rbasak | Daviey: AIUI, it's a wontfix because the feature is already supported via the filename dirname | 10:49 |
| rbasak | Justin did implement the 209 feature, but I don't think it went anywhere after that | 10:50 |
| Daviey | rbasak: before Justin left, he wrote a patch for 209 | 10:50 |
| Daviey | hah | 10:50 |
| rbasak | jhobbs pointed out in comment 2 that the existing support is sufficient | 10:50 |
| rbasak | It's just a question of how we arrange the pxelinux.cfg directory | 10:51 |
| rbasak | And this is only really necessary for the default files | 10:51 |
| rbasak | You could for example only serve a subarchdirectory filename entry for unknown MACs, and for known MACs just make the MAC-based config file correct for the architecture that we know it is | 10:51 |
| rbasak | Assuming that we know the architecture as soon as we know the MAC | 10:51 |
| Daviey | well default file handling is a PITA | 10:52 |
| Daviey | we'd need /var/lib/tftpboot/pxelinux.cfg/$arch/$flavour/default | 10:53 |
| rbasak | It isn't nice, but getting U-Boot support for 209 into every vendor firmware isn't really practical AFAICT | 10:53 |
| Daviey | rbasak: can you investigate if we can at least get that patch in trunk? | 10:53 |
| rbasak | That's a pretty big task to pick up | 10:54 |
| rbasak | I didn't even write the patch remember | 10:54 |
| rbasak | I'm not sure it's worth it given our current priorities | 10:54 |
| Daviey | rbasak: Yeah, i asked Justin to write the patch.. but i suspect he won't follow through with it now :) | 10:55 |
| Daviey | rbasak: current priority is pretty clear from #8.. we are still doing it wrong. | 10:55 |
| rbasak | I think we need to assume that the patch won't be present in vendor firmwares | 10:55 |
| jtv | If it helps, the question that's blocking us now is what would be a sensible directory structure for the files we need to serve on tftp. | 10:56 |
| rbasak | I'm not sure I understand what #8 means | 10:56 |
| Daviey | rbasak: it's a big task to submita pull request for this patch? | 10:56 |
| rbasak | We need to have a different kernel for every subarch | 10:56 |
| rbasak | Daviey: it's a big task to follow it through and potentially fix future bugs found in relation to the patch | 10:57 |
| Daviey | ok, fine, i'll just do it myself. | 10:57 |
| === matsubara_ is now known as matsubara-lunch | ||
| rbasak | If we need to have a different kernel for every subarch, we need to have a mapping from vendor class identifiers to our subarch names | 10:57 |
| rbasak | The mapping is within each default file | 10:58 |
| rbasak | Apart from the specific paths in use, I don't see how we could do it differently | 10:59 |
| rbasak | jtv: I think a sensible directory structure would be: | 10:59 |
| rbasak | pxelinux.cfg/amd64/{pxelinux.0,default} | 10:59 |
| rbasak | pxelinux.cfg/armhf/{armadaxp,highbank}/default | 11:00 |
| rbasak | pxelinux.cfg/combined/<mac> | 11:00 |
| rbasak | or if you don't like combined, just put each <mac> entry in the correct arch/subarch directory | 11:00 |
| jtv | Actually I wasn't expecting to be able to rearrange things inside the pxelinux.cfg directory… how do we tell clients what to look for in there? | 11:00 |
| rbasak | They look for their mac address in the directory that pxelinux.0 came from, which is specified by the DHCP filename field | 11:01 |
| jtv | So pxelinux.0 is inside the pxelinux.cfg? | 11:02 |
| rbasak | Oh, good point | 11:03 |
| jtv | (Stupid perpetual unity crashes…) | 11:03 |
| rbasak | I'm wrong. The pxelinux.cfg directory is expected to be in the same directory as pxelinux.0 | 11:03 |
| jtv | That's what I thought. | 11:03 |
| rbasak | Let me try again | 11:03 |
| jtv | Have a look at the updated google doc. | 11:03 |
| rbasak | amd64/pxelinux.0 | 11:04 |
| jtv | https://docs.google.com/a/canonical.com/document/d/1lpaxXmABGz7ytfc7TrXHCwin7B08EJBEHVyG92KO2qw/edit# | 11:04 |
| jtv | Near the bottom | 11:04 |
| rbasak | amd64/pxelinux.cfg/default | 11:04 |
| rbasak | armhf/{armadaxp,highbank}/pxelinux.cfg/default | 11:04 |
| jtv | The examples in the doc don't include release name yet though. | 11:04 |
| jtv | rbasak: the example you give is included there | 11:04 |
| jtv | ISTM we can create subdirectories for the initrds and kernels per release, and keep everything else as in the doc? | 11:05 |
| * jtv fiddles | 11:07 | |
| jtv | There. That's assuming that a node's specific config file will contain a reference to the right initrd/kernel, with its path. | 11:09 |
| jtv | Ooo, comments are flowing. Thanks Robie. | 11:09 |
| rbasak | jtv, Daviey: would a quick G+ be worth it? I think it's important we get this right, I haven't made any mistakes and we're all clear on how this wil work :) | 11:11 |
| jtv | Sure. | 11:13 |
| jtv | Who wants to set up a hangout? | 11:13 |
| * rbasak does one | 11:14 | |
| rbasak | Daviey: ? | 11:18 |
| Daviey | rbasak: I think 209 is the /right/ fix TBH | 11:19 |
| rbasak | Daviey: I agree, but I'm being pragmatic. It's never gonna happen. | 11:19 |
| rbasak | Since some vendors will never have caught up | 11:19 |
| Daviey | rbasak: you know we are stakeholders in defining this stuff, right? | 11:20 |
| Daviey | rbasak: we may well need to chainload into 'someting smarter' regardless.. Depending on embedded firmware for anything is a limitation we need to be careful folding into. | 11:21 |
| jtv | Daviey: coming into the hangout? | 11:22 |
| rbasak | Daviey: can you join our G+? | 11:22 |
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| === matsubara is now known as matsubara-afk | ||
| === hazmat is now known as kapilt | ||
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| kurt_ | Can anyone tell me what the mechanism is in maas that copies ssh keys from ~/.ssh/id_rsa.pub to the boot image? | 22:30 |
| === Aaton is now known as Aaton_off | ||
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